Loading machine

ABSTRACT

A loading machine having two rotatably connected scoops. One of the scoops is, in one of its end positions, received in the other scoop and is thereby directed in the same direction as the other scoop.

United States Patent [1 1 1111 3,917,089 Eriksson Nov. 4, 1975 LOADING MACHINE [56] References Cited [75] Inventor: Sven Erik Nore Eriksson, Orebro, ITE STA PA S Sweden 2,203,713 6/1948 Austin 37/127 3,092,920 6/1963 Benno 214/146 E [73] Asslgnee' g Ake'ebdag' Nekka 3,341,041 9/1967 Salna 214/145 we 3,598,266 8/1971 Fisher 214/145 [22] Filed: Dec. 7, 1972 Primary ExaminerRobert J. Spar [21] Appl 3l3129 Assistant Examiner-Ross Weaver Attorney, Agent, or FirmEric Y. Munson [30] Foreign Application Priority Data Dec. 16, 1971 Sweden 16105/71 ABSTRACT A loading machine having two rotatably connected 52] US. c1...214/14s; 37/117.5; 37/127; 214/146E Scoops. one of the scoops is, in one of its end pm CL: tions received in the other coop and is thereby of Search E, rected in the arne direction as the other 8 Claims, 6 Drawing Figures Sheet 1 of 2 U.S. Patent Nov. 4, 1975 Fig. 4

U.S. Patent Nov. 4, 1975 Sheet 2 of2 3,917,089

LOADING MACHINE BACKGROUND OF THE INVENTION the loading capacity is achieved while maintaining the vehicle dimensions designed for the load-bucket only. When the scoop is filled and locked in a raised position by a hooking device on the vehicle, the filling of the load-bucket is facilitated since the weight of the filled scoop favourably influences the driving capacity of the front wheel-pair. The invention has the characteristics defined in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS One embodiment of the invention will be described below with reference to the attached drawing on which FIG. 1 is a side view of a loading machine with the loadbucket raised to the position where hooking of the scoop occurs. FIG. 2 shows the loading machine with the load-bucket lowered and the scoop hooked. FlG."3.

shows the loading machine with the load-bucket raised and the scoop raised past the hooking position. FIG. 4 shows the loading machine with the load-bucket and the scoop in dumping position. FIG. 5 is a top plan view of the front part of the loading machine. FIG. 6 is a side view of the load-bucket showing the scoop in three positions.

SUMMARY OF THE INVENTION The loading machine shown on the drawing comprises a centrally steered vehicle 1 which is steered by hydraulic jacks 45. To make the central steering possible the vehicle 1 has central joints 43, 44. Since the design of the vehicle does not form a part of the invention it will not be further described.

The loading machine is provided with two arms 4, 5 which are rotatably connected to the vehicle 1 through joints 22, of which one is shown. A load-bucket 2 is rotatably carried by the arms 4, 5 through joints 32, of which one is shown. For raising or lowering of the loadbucket 2, the loading machine is provided with two hydraulic jacks l6, 17. The hydraulic jacks l6, 17 are connected to the arms 4, 5 by cylindrical pins 20, 21. The hydraulic jacks l6, 17 are furthermore connected to pivots l8, 19 on the vehicle 1. For tilting of the loadbucket 2 about the joints 32 the loading machine is provided with hydraulic jacks 26, 27. The latter are connected to the load-bucket 2.through joints 30, 31. The hydraulic jacks 26, 27 are furthermore connected to pivots 28, 29, which are mounted on projections 24, on the arms 4, 5. On the side turned towards the vehicle 1, the load-bucket 2 is provided with two brackets 8, 9, which through oints 10, 11 are connected to brackets 6, 7 on a scoop 3. A cylindrical rod 12 extends between the brackets 6, 7 on the scoop 3. A hook 13 is pivotally connected to braces 15 on the vehicle 1 by means of a pin 14. The hook 13 is adapted to cooperate with the rod 12 for hooking of the scoop 3. In order to achieve a simple automatic hooking of the scoop the pivot pin 14 of the hook 13 has been so located that the hook 13 by force of gravity will return to the position 42 in which position hooking of the scoop 3 occurs. The load-bucket 2 is so designed that the scoop 3 in one of its end positions is located within the load-bucket 2.

The scoop 3 is thus steered in the same direction as the load-bucket. This position has in FIG. 6 been given the reference numeral 33. When the load-bucket 2 is raised so that the scoop 3 is moved from the position 33 to the position 34 the scoop 3 is automatically hooked and locked in position. This hooking action is produced by the rod 12 removing the hook 13 from the position shown at 42 in FIG. 6. When the rod 12 has passed the hook 13 the latter swings back by force of gravity to the position shown at 42. The position 35 of. the scoop 3 corresponds to the position'which the scoop takes in FIG. 3. I i

The loading machine shown on the drawing operates in the following manner. In the starting position the scoop 3 is located within the load-bucket 2. After the scoop 3 has been filled, the load-bucket is raised to the extent necessary for the scoop 3 to be hooked and locked in position by the hook 13. This position is shown in FIG. 1. Thereafter the load-bucket 2 is lowered to the position shown in FIG. 2, and filled. The load-bucket 2 then again is raised to the position shown in FIG. 3, whereby the scoop 3 is raised further by the material in the load-bucket 2 so that the rod 12 will become disengaged from the hook 13. The loading machine is thereafter driven to a dumping place where the load-bucket 2, through the action of the hydraulic jacks 26, 27, is tilted about the joints 32. This position is shown in FIG. 4. As the material is discharged from the load-bucket 2, the scoop 3 is swung about the joints 10, 11 into the load-bucket 2, and in turn emptied. In order to facilitate the emptying process the hydraulic jacks 26, 27 or the hydraulic jacks l6, 17 or eventually all can be supplied with hydraulic fluid, the pressure of which pulsates so that the loadbucket 2 and the scoop 3 are subjected to vibrations. The loading machine is furthermore suitably provided with means for preventing the scoop 3 to tilt towards the drivers cabin.

The above described and on the drawing shown embodiment of the invention is only to be regarded as an example which can be modified within the scope of the subsequent claims.

What I claim is:

1. A loading machine comprising:

a. a vehicle for transporting the loaded material to a place of discharge;

b. a load bucket tiltably connected to arm means pivotally connected to said vehicle for raising and lowering the same to selective positions;

0. a scoop pivotally connected to said load bucket to be steered and raised thereby and dimensioned to be nested within said load bucket in the loading position and mounted to be tilted into a discharge position together with said load bucket as the loaded material is being discharged therefrom;

(1. means connected to said vehicle effective to retain said scoop in a selective position while permitting said load bucket to be lowered into a material loading position.

2. A loading machine according to claim 1, further comprising a device for hooking said scoop rotatably journalled on said vehicle and biased towards an end position by gravity for cooperation with said scoop.

comprising two projections on said load-bucket each of which is connected to a corresponding projection on said scoop through a joint.

7. A loading machine according to claim 1, in which a rod-like device is mounted between said projections on said scoop for cooperation with said device for hooking said scoop.

8. A loading machine comprising:

a. a vehicle for transporting the loaded material to a place of discharge;

b. a load bucket connected to said vehicle to swing along an arc in a vertical plane from a loading position to a transporting position and being mounted for tilting into a discharge position;

c. a scoop mounted on said vehicle to swing indepen dently along said are and dimensioned to be nested within said load bucket when in a material loading position and being pivoted to be raised to a predetermined position by the upwardly swinging movement of said load bucket;

d. means connected to said vehicle effective to retain.

said scoop in said predetermined position while permitting said load bucket to be swung downward to a material loading position;

e. said retaining means also being effective to release said scoop upon engagement with the loaded material in said load bucket as the latter swings upwardly to assume a position for transporting the material by said vehicle;

f. said scoop being mounted to be tilted into a discharge position through said load bucket as the material is being discharged therefrom. 

1. A loading machine comprising: a. a vehicle for transporting the loaded material to a place of discharge; b. a load bucket tiltably connected to arm means pivotally connected to said vehicle for raising and lowering the same to selective positions; c. a scoop pivotally connected to said load bucket to be steered and raised thereby and dimensioned to be nested within said load bucket in the loading position and mounted to be tilted into a discharge position together with said load bucket as the loaded material is being discharged therefrom; d. means connected to said vehicle effective to retain said scoop in a selective position while permitting said load bucket to be lowered into a material loading position.
 2. A loading machine according to claim 1, further comprising a device for hooking said scoop rotatably journalled on said vehicle and biased towards an end position by gravity for cooperation with said scoop.
 3. A loading machine according to claim 1, comprising two arms, rotatably connected to the vehicle, for rotatably carrying said load-bucket.
 4. A loading machine according to claim 1, further comprising hydraulic jacks, arranged between said arms and the vehicle, for raising or lowering said load-bucket.
 5. A loading machine according to claim 1, further comprising hydraulic jacks, arranged between said arms and said load-bucket, for tilting said load-bucket.
 6. A loading machine according to cLaim 1, further comprising two projections on said load-bucket each of which is connected to a corresponding projection on said scoop through a joint.
 7. A loading machine according to claim 1, in which a rod-like device is mounted between said projections on said scoop for cooperation with said device for hooking said scoop.
 8. A loading machine comprising: a. a vehicle for transporting the loaded material to a place of discharge; b. a load bucket connected to said vehicle to swing along an arc in a vertical plane from a loading position to a transporting position and being mounted for tilting into a discharge position; c. a scoop mounted on said vehicle to swing independently along said arc and dimensioned to be nested within said load bucket when in a material loading position and being pivoted to be raised to a predetermined position by the upwardly swinging movement of said load bucket; d. means connected to said vehicle effective to retain said scoop in said predetermined position while permitting said load bucket to be swung downward to a material loading position; e. said retaining means also being effective to release said scoop upon engagement with the loaded material in said load bucket as the latter swings upwardly to assume a position for transporting the material by said vehicle; f. said scoop being mounted to be tilted into a discharge position through said load bucket as the material is being discharged therefrom. 